/*
For fixed integers a, b, c, define the crazy function F(n) as follows:
F(n) = n - c for all n &gt; b 
F(n) = F(a + F(a + F(a + F(a + n)))) for all n ≤ b.


Also, define S(a, b, c) = .


For example, if a = 50, b = 2000 and c = 40, then F(0) = 3240 and F(2000) = 2040.
Also, S(50, 2000, 40) = 5204240.


Find the last 9 digits of S(217, 721, 127).

Anser:
Time:
*/
package main

import (
	"fmt"
	"time"
)

func main() {
	tstart := time.Now()



	tend := time.Now()
	fmt.Println(tend.Sub(tstart))
}